Mixed pulse accumulated observation based target parameter estimation method of compressed sensing radar

A technology of compressed sensing and mixed pulses, which is applied in measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc. It can solve the problems of compressed sensing that cannot reconstruct the target scene, performance degradation, and target cross-distance unit movement.

Active Publication Date: 2018-12-11
CHANGSHU RES INST OF DALIAN UNIV OF TECH CO LTD
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Problems solved by technology

[0002] In the presence of strong noise, the performance of compressed sensing theory on signal sparse reconstruction will decline rapidly. However, radar systems often face the situation of low signal-to-noise ratio. Strong noise has become an important aspect of compressive sensing radar in hardware implementation and engineering application research. A major problem faced in the process of
In the existing work, scholars have carried out research on the optimal reconstruction algorithm of compressive sensing radar in the background of strong noise. Accurate reconstruction of the target scene, in the process of long-term pulse accumulation, often faces the problem of the target moving across distance units

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  • Mixed pulse accumulated observation based target parameter estimation method of compressed sensing radar
  • Mixed pulse accumulated observation based target parameter estimation method of compressed sensing radar
  • Mixed pulse accumulated observation based target parameter estimation method of compressed sensing radar

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[0048]Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0049] The present invention provides a compressed sensing radar target parameter estimation method based on mixed pulse accumulation observation, which generally includes three parts: a method for grouping compressed sensing radar echo signal groups based on target velocity, and a method based on pulse group accumulation and target distance walking compensation Design method of hybrid pulse accumulation observation matrix for compressive sensing radar and design of joint ...

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Abstract

The invention discloses a mixed pulse accumulated observation based target parameter estimation method of a compressed sensing radar. The method mainly comprises an echo signal grouping method of thecompressed sensing radar based on the target speed, a mixed pulse accumulated observation matrix design method of the compressed sensing radar based on pulse grouped accumulated and target distance walking compensation, and design of a combined optimized reconstruction algorithm aimed at data after pulse accumulated observation. The observation matrix of the specific structure is designed, groupedaccumulation of the echo pulses of the compressed sensing radar is realized, walking compensation in the target distance is realized further via a target distance walking compensation observation matrix, and the detection performance of the compressed sensing radar under the lower signal to noise ratio condition is improved substantially.

Description

technical field [0001] The invention specifically relates to a compression sensing radar target parameter estimation method based on mixed pulse accumulation observation. Background technique [0002] In the presence of strong noise, the performance of compressed sensing theory on signal sparse reconstruction will decline rapidly. However, radar systems often face the situation of low signal-to-noise ratio. Strong noise has become an important aspect of compressive sensing radar in hardware implementation and engineering application research. A major problem faced in the process. In the existing work, scholars have carried out research on the optimal reconstruction algorithm of compressive sensing radar in the background of strong noise. Accurate reconstruction of the target scene often faces the problem of the target moving across distance units during the long-term pulse accumulation process. Contents of the invention [0003] Purpose of the invention: In order to over...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/292G01S13/28
CPCG01S7/2923G01S13/28
Inventor 陶宇陈前宇刘玉申张静亚徐健
Owner CHANGSHU RES INST OF DALIAN UNIV OF TECH CO LTD
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